Paper-machine



, v(No Model.)

G. C.'GrILL PAPER MACHINE.

N0. 556,181. n .Pa-sented Mal. 10.1896.

UNITED STATES PATENT OEE1cE.

GEORGE O. GILL, OF HOLYOKE, MASSACHUSETTS.

PAPER-MACHINE.

SPECIFICATION forming part of Letters Patent No. 556,181, dated March10, 1896.

Application filed rune17,1895. sentire. 552,991. (Nomade.)

To @ZZ whom it may concern.-

Be it known that I, GEORGE C. GILL, a citizen of the United States ofAmerica, residing at Holyoke, in the county of Hampden and State ofMassachusetts, have invented new and useful Improvements inPaper-Machines, of which the following is a speciiication.

As well known in the manufacture of paper, the web of pulp is passedaround and over several rotary drier drums` or cylinders which areheated by steam circulating therein. One disadvantage'ous conditionwhich is found to exist against the most efficient drying action by thecylinders upon the web of paper consists in the filling of the drumswith wat-er by condensation up to the height of the journals, which arehollow, so that by reason of the drums being constantly about half-fullof water decreased space for the circulation of steam remains, wherebythe capacity for the drying operations, both in degree and the qualityof the result, is very materially and unduly limited.

Various expedients have been devised orV proposed for effecting thewithdrawal of the accumulated water in the drums, some of which, whilepracticable in a degree, have been very complicated and expensive, whileothers have been so inefficient as to render their employmentinadvisable.

It is the object of the present invention to provide means for keepingthe drier-drums of a paper-machine-such as a Fourdrinier machine emptiedof all condensations, whereby a full holding capacity of the drum forsteam will always be available, which means for such purpose shall besimple, easily applied, automatic, continuous, and entirely practicaland efficient in its operation, requiring no attention or care, andwithal very inexpensive; and for the accomplishment thereof theinvention consists in the combinations and arrangements of parts, allsubstantially as will hereinafter fully appear, and be set forth in theclaims.

In the drawings, Figure lis a side elevation of an intermediate partofran ordinary Fourdrinier paper-machine, which comprises a series ofsteam drier drums or cylinders, and which has combined therewith theapparatus which constitutes the present invention, parts thereof beingin vertical section. Fig. 2 is a sectional elevation taken on the planeindicated by the line 2 2, Fig. l. Fig. 3 is a hori- Zontalcross-section in detail taken on the line 3 3, Fig. l. Fig. l is asectional view, on a larger scale, through one of the journals andconnected parts for one of, the drierdrums. v taken on the line 5 5,Eig. Ll.

Each drier drum or cylinder A has at its end a journal a, which issupported in the side standard b of the machine, and has coupled theretothe tubular connection B, having therein the two separate passages CZand f, the one, d, of which has clear and free communication with theinterior, of the rotary drier-drum A through the tubular journal a, Theparts a and B are so coupled and packed that while the latter isstationary it constitutes no impediment to the free rotation of thejournal a, and yet the connection is suitably steam-tight. The passage fhas connected to its inner end the tube f2, which extends through thehollow journal ct within thecylinder A, and has its inner extremitydownwardly turned, terminating near the inner periphery of the drum,asseen in Fig. 2.

To the outer end of the journal connection B is connected, incommunication with the steam-passage d therethrough, the steam-pipe cl2,which also has connection with the larger steam-pipe D, which rangesalong the side of the machine in common to the several drierdrums, andhaving steam connections with all of said drums through the form ofjournal connections which has been briefly described for one of thedrums, and said steam-supply pipe D, connected, as aforesaid, with theseveral steam-distributing pipes cl2, has a pipe di leading thereintofrom the boiler( Each double-passaged connection B has connected to thepassage f thereof a pipe g, which extends downwardly to connection withthe large pipe or conduit G, which ranges alongside of the aforesaidpipe D. Thus for a set of drumsthere are provided in common thereto thetwo pipes D and G, both having connections through individual branchpipes with the steam and exhaust passages through the journals of theseveral drier-drums.

The pipe G, which is closed, except as to the branched pipe connectionsgg, has connected thereto a suction apparatus and a pe- Fig. 5 is across-section in detail' IOO cuiliarly combined and arrangedoutlet-conduit for condensation `drawnby the ksaid sucmtion apparatusfrom thecylinders intothe pipe G and out from thelatter into ranysuitable receptacle or towaste; and, describing imposed uponthe specificform ory detailed kconstruction thereon) itwiil be pointedout ktlxatthere isa suction-pipe 71y which is in the form of an inverted U-,andwhich has its one en d connected to the coupling 7a2 and itsothcrvertical limb depending through the :closed head of `and within a-largervertical pipe 7f1',

i :into which isilateralily entered a water-suplily pipe j, the7 place7of entrancer of pipcj into pipe being somewhatabove Lthe lower open f 2Lend ofthe smaller pipe 7L.r ilVater undersuitable pressure is caused toconstantly run from I ypipe j into and down f through pipe kFrom thehollowed coupling yhithe pipesection 71,3 7enters,through the 7head orend wall of the aforementioned large horizontal f .pipe G, and at thelower end of thezsaid couplingh2 is connected thedownwardly-oxtendingconduit l111which,preferably,'has aref 7tu r11-bend, asseen'at m2, toconstitute aftrap or water seal, and with the discharge continuf ationor passage m, which may leadback to 7the boiler orelsewhere. f f f f f fThe water entered and falling in the pipe 1'r causes a suction throughthe pipe 71l and wlthinthe pipe G, the eiiect of which is to drawthroughthepme f?, passage f, and pi pc f y :into and through the said pipe Gwater and condensation from the drier-drum, and the same in passing intothe coupling 7L- (at the topv oi' which the suction-pipe 7L is entered)will by reason of its gravity fall down in the pipe m, the force of thesuction or vacuum being insuilicient to carry the water up to and acrossthe intermediate horizontal member or back of the return-bentsuction-conduit 71,. In practice there maybe in some extent a smallproportion of steam not fully condensed, which will be drawn around intothe pipe '27,' but this is immaterial.

Other means than those shown may be employed for creating the vacuum orsuction effeet in an upward direction at the junction oi' dependingconduit m and the branch thereof which leads into the pipe G withoutdeparting from the essentials of the present invention, and while theparticular arrangement of common steam-supply pipes l) with branchedsteam-distributing pipes leading to the several drier-drums, and also ofthe common large conduit or chamber G with individual blanches g, havinga Siphon-like communication with the lower interior portions of thedrums, are shown as advantageous, very dcsirable, cflicient, ingenious,novel and valuable, the invention is not to be limited to thisparticular arrangement inasmuch as the gist of the invention consists inthe"combina tion, with a drier-drum of the paper-machine havinganadequate steam-inlet conduit, of an outlet-conduit which has acommunication -fi through the journal of the drum with a lower portionof the interior thereof, and which has a connection outside of the drinnwith a chamber or passage connected to the top of whichk is asuction-pipe and :to the bottom of which a downwardly-directeddischarge-passage.

r:It is understood that `in this machine the steam'which is entered inthe drier-drinns is at such low pressure as to show practically no fpressureat the gage. yllencethere islittlc or c 'l laviug7 thusdescribed myinvention, what l. claim, and desire to secure by Letterslatent, isf 'l `In a paper-machi ne,the combination withy a series: ofrotaryY drier drums or cylnlders .cach rlmrvinga steam inlet conduit,of, Lthe chamber or conduit, G, provided in common yto the several drumsand having siphon-likc kbranched conduits leading from said conduit, fG, through a journal of each `of lheidrunls yand communieatingy with theinterior ci" the drums near their bottoms, a suction-pipe, 711, f

having a connection for suction with the con-y duit, G, and yhaving adependinglimb, kthe pipe, fi, into which said limb enters and whichr fhasthe sidewise-entering water-supply pipe,y

j, anda dowliwardly-directed conduit, m, having connection with the saidconduit, G, at a point adjacent and under the place of connection tosaid conduit of the suction-pipe, substantially as described.

2. ln a paper-machine in combination, a scries of rotary drier drums orcylinders each having a steam-inlet conduit, the conduit or chamber, G,provided in common to the several drums and having branched conduitsleading therefrom through a journal of each oi the drums andcommunicating with the interior of the drums near their bottoms, thecoupling, 7b2, having a branched pipe, 7L, connecting the conduit, G,the return-bent suction-pipe, 71, having one end entered in the top ofthe hollow coupling, 7L", the Vertical pipe, t', of larger diameter thanthe suctionpipe and within which the other limb of said suction-pipeextends, the water-supply pi pc, j, entering pipe, 1l, above the lowerend of the said entered suction-pipe, and the conduit, m, connected tothe lower end ol' the coupling, 712, and having the return-bent passageand the discharge continuation, m3, all substantially as described andshown and .lor the purposes set forth.

GEORGE (l. Gllil'i.

Witnesses:

WM. S. llnLLows, K. I. GLEMoNs.

IOO

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